Re: Postfix & SMTP AUTH - OS

From: luna (no email)
Date: Fri May 03 2002 - 01:01:51 EDT


On Thu, 2 May 2002, Jerry Van Brimmer wrote:

>On Thu, 2 May 2002 20:43:23 -0400 (EDT)
>luna <> wrote:
>
>> well, if your only need is for postfix to provide outgoing mail
>> services, and it's gonna be on the same machine as mutt, you really
>> don't need smtp auth at all..
>Then why does SMTP AUTH exist at all?

(generic description) smtp auth exists so people who run mail servers can
1 - be generally 'more secure'
2 - allow valid users to relay through their mail server regardless of
        what ip the user is coming from
3 - be more flexible
4 - there's more to it than that, but those are just a few examples.

>I keep hearing this, but no instructions as to how to do it.
>
>>
>> when you are authenticating yourself to "the server"and sending mail,
>> vei.net's mail server (mail.vei.net) is taking your message and
>> sending it to the recipient's mail server.. however, you can remove
>> one link from the chain (in a sense)- install postfix on your server,
>
>I don't have a "server", just a home PC.

if postfix is installed on your computer, then in the context of this
topic, it is (or can be) a server.

>> set it up to only listen on the loopback interface,
>
>What is a/the "loopback interface"?

look at the output of 'ifconfig -a' - one of those is your loopback
interface.

>>change your mutt
>> config to use localhost as it's smtp server rather than mail.vei.net,
>> and then your own computer(e.g. postfix) will take your message,
>> deliver it directly to the recipient's mail server, without ever
>> involving mail.vei.net (unless the recipient's mail server just
>> happens to be mail.vei.net. (how's that for a run-on sentence?)
>>
>> all of this can be done without the need for smtp auth, and imho, if
>> your needs are as basic as appears, setting up smtp auth would be way
>> more trouble than it's worth.
>
>Well, I'd really like to know how to do this.

start by getting postfix up and running.

>> bim that in the above example, i'm asuming mutt is prompting you to
>> authenticate when mail is sent.
>
>No, it doesn't.

in your example you said when you send mail, you get prompted to
authenticate - meaning the server you were sending your mail through was
asking for authentication info, causing something on your end to prompt
you to provide that info.. normally the would be the client program (i.e.
mutt, outlook express, eudora, etc)

-ben

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